html,body{
    height: 100%;
}
.body {
    margin: 0 auto;
    width: 100%;
    height: 100%;
    /*position: fixed;*/
    z-index: -10;
    background: url(../images/win_success.jpg) no-repeat;
    /*background-position: 0px 0px;*/
    background-size: 100% 100%;
    -moz-background-size: 100% 100%;
    text-align: center; /*让文字水平居中*/
}
